| Index | Grafton | Iowa | National |
| Income per capita | $49,951 | $42,672 | $44,883 |
| Median household income | $79,946 | $81,387 | $81,333 |
| Median income owner occupied | $90,994 | $98,724 | $106,172 |
| Median income renter occupied | $55,872 | $45,890 | $52,080 |
| Median earnings male | $57,052 | $54,047 | $54,343 |
| Median earnings female | $53,511 | $36,462 | $38,439 |
| Unemployment rate | 0.7% | 3.2% | 4.9% |
| Poverty level | 5.1% | 12.3% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 17.8% | 17.8% |
| Manufacturing sector | 19.2% | 19.2% |
| Financial & insurance services | 2.7% | 2.7% |
| Wholesale & retail services | 4.1% | 4.1% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 4.1% | 4.1% |
| Education, health & social services | 5.5% | 5.5% |
| Other | 45.2% | 45.2% |
| City | Population | Household Income | National Avg. |
| Manly, IA | 1,533 | $97,968 | 20.5% |
| St. Ansgar, IA | 1,176 | $97,313 | 19.6% |
| Nora Springs, IA | 1,692 | $96,346 | 18.5% |
| Plymouth, IA | 483 | $93,145 | 14.5% |
| Mitchell, IA | 147 | $91,619 | 12.6% |
| Grafton, IA | 187 | $79,946 | 1.7% |
| City | Population | Household Income | National Avg. |
| Olancha, CA | 187 | $90,001 | 10.7% |
| Fort Green, FL | 187 | $122,990 | 51.2% |
| Alston, GA | 187 | $40,150 | 50.6% |
| Bristow, IA | 187 | $0 | 100.0% |
| Marathon, IA | 187 | $64,892 | 20.2% |
| Grafton, IA | 187 | $79,946 | 1.7% |